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A dispensing cap intended to equip a reservoir containing a liquid or viscous product includes a body provided with at least one dispensing opening and a lid articulated to the body around an axis. The lid is intended to stopper the dispensing opening in the storage position. The body and the lid ar

A dispensing cap intended to equip a reservoir containing a liquid or viscous product includes a body provided with at least one dispensing opening and a lid articulated to the body around an axis. The lid is intended to stopper the dispensing opening in the storage position. The body and the lid are made of a rigid or semirigid material. At least one gripping zone is arranged on the lid and/or the body to facilitate the opening and/or closing of the lid, the gripping zone being formed by an elastomeric material.

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1. A dispensing cap for a reservoir containing a liquid or viscous product, comprising:a rigid or semirigid body having at least one dispensing opening; a rigid or semirigid lid articulated to the body around an articulation axis so as to stopper the dispensing opening in a storage position of the l

1. A dispensing cap for a reservoir containing a liquid or viscous product, comprising:a rigid or semirigid body having at least one dispensing opening; a rigid or semirigid lid articulated to the body around an articulation axis so as to stopper the dispensing opening in a storage position of the lid; and at least one connecting element overmolded in a thermoplastic material, and elastically deformable in elongation along a length of the at least one connecting element to form a spring, one of the ends of the connecting element being connected to the body, the other end being connected to the lid, and the connecting element being mounted in such a way as to be situated on one side of the articulation axis in an open position and on the other side of the axis in a closed position of the lid; and wherein when the connecting element passes from one of the positions to the other, the at least one connecting element is subjected to an elongation whose maximum is reached when connecting element passes in the region of the articulation axis, wherein a gripping zone formed of an elastomeric material is arranged on at least one of the lid and the body to facilitate opening and closing of the lid. 2. The cap according to claim 1, wherein the rigid or semirigid material is chosen from the group consisting of polypropylenes and polyethylenes.3. The cap according to claim 1, wherein the elastomeric material is a thermoplastic elastomer compatible with the rigid or semirigid material so as to be capable of creating a mechanical bond with the rigid or semirigid material by thermofusion.4. The cap according to claim 1, wherein the elastomeric material has a color different from that of the rigid or semirigid material.5. The cap according to claim 1, wherein the elastomeric material is chosen from the group consisting of copolymers of propylene/ethylene; polyether blocamides; polyvinyls; terpolymers of ethylene, propylene and of a diene (EPDM); sequenced polymers of styrene-butadiene (SBS); sequenced polymers of styrene-ethylene-butadiene (SEBS-SIS); thermoplastic polyurethanes; and mixtures of polypropylene with one of the following elastomers: sequenced polymers of styrene-ethylene-butadiene (SEBS-SIS), terpolymers of ethylene, propylene and of a diene (EPDM), and sequenced polymers of styrene-butadiene (SBS).6. The cap according to claim 1, wherein the lid includes a stoppering plug capable of stoppering the dispensing opening in the storage position, wherein a covering of an elastomeric material is situated on the stoppering plug or inside the opening to ensure the seal between the stoppering plug and the opening in the storage position.7. The cap according to claim 6, wherein the stoppering plug is filled with the elastomeric material.8. The cap according to claim 1, wherein the body has the annular gasket made of an elastomeric material in leakproof contact with a peripheral edge of the lid when the lid is in its storage position.9. The cap according to claim 1, wherein the lid is articulated on the body by means of a film hinge.10. The cap according to claim 1, wherein the gripping zone is formed as a concave recessed portion in the form of a circular arc.11. The cap according to claim 1, wherein the gripping zone is situated diametrically opposite the hinge.12. The cap according to claim 1, wherein the gripping zone is formed by a concave bent portion of the lid.13. The dispensing cap according to claim 1, wherein the elastomeric material is deposited on the rigid or semirigid material by duplicate injection molding.14. A unit for dispensing a fluid product, comprising:a reservoir containing a fluid product; a cap comprising a rigid or semirigid body having at least one dispensing opening, and a rigid or semirigid lid articulated to the body around an articulation axis so as to stopper the dispensing opening in a storage position of the lid, wherein a gripping zone formed of an elastomeric material is arranged on at least one of the lid and the body to facilitate opening and closing of the lid; and at least one connecting element overmolded in a thermoplastic material, and elastically deformable in elongation along a length of the at least one connecting element to form a spring, one of the ends of the connecting element being connected to the body, the other end being connected to the lid, and the connecting element being mounted in such a way as to be situated on one side of the articulation axis in an open position and on the other side of the axis in a closed position of the lid; and wherein when the connecting element passes from one of the positions to the other, the at least one connecting element is subjected to an elongation whose maximum is reached when connecting element passes in the region of the articulation axis. 15. A dispensing cap for a reservoir containing a liquid or viscous product comprising:a rigid or semirigid body having at least one dispensing opening; a rigid or semirigid lid articulated to the body around an articulation axis so as to stopper the dispensing opening in a storage position of the lid, the articulation is formed by a film hinge so that the body and the lid constitute one single piece, wherein a gripping zone formed of a bi-injected elastomer material is arranged on at least one of the lid and the body to facilitate opening and closing of the lid, wherein said body comprises a skirt with a recessed portion, and said gripping zone is arranged on said recessed portion.16. The cap according to claim 15, wherein the elastomeric material is a thermoplastic elastomer compatible with the rigid or semirigid material so as to be capable of creating a mechanical bond with the rigid or semirigid material by thermofusion.17. The cap according to claim 15, wherein the elastomeric material has a color different from that of the rigid or semirigid material.18. The dispensing cap according to claim 15, wherein the elastomeric material is deposited on the rigid or semirigid material by duplicate injection molding.19. The dispensing cap according to claim 15, wherein said lid comprises a lid gripping zone.20. The dispensing cap according to claim 19, wherein said lid gripping zone is arranged above said gripping zone on said skirt when said lid is in said storage position.21. The dispensing cap according to claim 19, wherein said lid gripping zone is formed in a concave portion of said lid.22. The dispensing cap according to claim 15, further comprising an elastic strip having one end connected to said lid and another end connected to said body, wherein said elastic strip passes through an elongation maximum when said lid moves from an open position to said storage position.23. The dispensing cap according to claim 15, wherein said lid comprises a stopper which enters into said dispensing opening when said lid moves to said storage position.24. The dispensing cap according to claim 23, wherein said stopper is covered with a flexible material so that said stopper enters said dispensing opening with friction when said lid is placed in said position.25. The dispensing cap according to claim 23, wherein said dispensing opening is formed in a tubular portion covered with a flexible material so that said stopper enters said dispensing opening with friction when said lid is placed in said storage position.26. The dispensing cap according to claim 23, wherein said stopper is hollow and filled with a flexible material.